DEREK E NEILSON MD
NPI 1548293822
Medical Genetics - Clinical Genetics (M.D.) in Phoenix, AZ

Active since July 09, 2006PECOS Enrolled
1920 E CAMBRIDGE AVE STE 304, PHOENIX, AZ 85006(602) 933-4363(602) 933-2415 Get Directions Write a Review

NPPES record last updated: July 10, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Derek E Neilson Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DEREK E NEILSON MD (NPI 1548293822) is an individual clinical genetics (m.d.) provider in Phoenix, Arizona, licensed in Arizona (56355) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1548293822
Entity TypeIndividualMale
Primary Taxonomy207SG0201X
Provider Legal NameDEREK E NEILSONCredential: MD
Location Address1920 E CAMBRIDGE AVE STE 304Phoenix, AZ 85006
Mailing Address3200 E Camelback Rd Ste 250Phoenix, AZ 85018-2327 · (602) 933-1814
Fax(602) 933-2415
Sole ProprietorNo
Enumeration DateJuly 9, 2006
Last NPPES UpdateJuly 10, 2018
✔ NPI 1548293822 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMedical Genetics · Clinical Genetics (M.D.)Allopathic & Osteopathic Physicians
Taxonomy Code207SG0201X
Licenses✔ Licensed in AZ · 56355✔ Licensed in OH · 35-083650
Definition
A clinical geneticist demonstrates competence in providing comprehensive diagnostic, management and counseling services for genetic disorders.
1920 E CAMBRIDGE AVE STE 304, Phoenix, AZ 85006

Other Identifiers 7

Medicaid2499952OH
Other745996OH · Buckeye
Other000000340115OH · Anthem
Other000000224312OH · Unison
Other7841606OH · Aetna
Other000000529594OH · Anthem
Other363878OH · Wellcare

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Derek E Neilson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Derek Neilson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Pediatrics
1919 E THOMAS RD
Phoenix, AZ 85016
  • Reassigned Medicare billing, Arizona enrollment
  • 1,416 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Medical Genetics (Clinical Genetics (M.D.))
1920 E CAMBRIDGE AVE STE 304
PHOENIX, AZ 85006
Genetic Counselor, MS
1920 E CAMBRIDGE AVE STE 304
PHOENIX, AZ 85006
Medical Genetics (Clinical Genetics (M.D.))
1920 E CAMBRIDGE AVE STE 304
PHOENIX, AZ 85006
Genetic Counselor, MS
1920 E CAMBRIDGE AVE STE 304
PHOENIX, AZ 85006
Nurse Practitioner (Pediatrics)
1920 E CAMBRIDGE AVE STE 304
PHOENIX, AZ 85006

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Derek Neilson's NPI number?

The NPI number for Derek Neilson is 1548293822. It was assigned to this individual provider in the NPPES registry on July 9, 2006.

Where is Derek Neilson located?

Derek Neilson practices at 1920 E Cambridge Ave Ste 304, Phoenix, AZ 85006. The listed phone number is (602) 933-4363.

What is Derek Neilson's specialty?

The primary specialty registered for this NPI is Medical Genetics, specializing in Clinical Genetics (M.D.), with taxonomy code 207SG0201X.

Is Derek Neilson enrolled in Medicare?

Yes. Derek Neilson is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Derek Neilson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Derek Neilson reassigns Medicare benefits to Phoenix Children's Hospital (Phoenix, AZ). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Derek Neilson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Derek Neilson was last updated on July 10, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.